Stress Concentration Factor of Expanded Aluminum Tubes Using Finite Element Modeling

L Mhamdi, AC Seibi, A Karrech, S El-Borgi, I Barsoum

Abstract


 This paper discusses the development of semi-empirical relations for the maximum stress concentration factor (SCF) around circular holes embedded in aluminum tubes under various expansion ratios and mandrel angles. Finite element models were developed to study the expansion of a typical aluminum tube with embedded holes of various sizes. An elastic perfectly-plastic material behaviour was used to describe the structural response of the tubes under expansion. Various hole-diameter-to-tubewall- thickness ratios, tube expansion ratios, and mandrel angles were considered to determine the stress state around the hole at zero and 90 degree locations from which the maximum SCF was determined. Semi-empirical relations for the maximum SCF using the Lagrange interpolation formulation were developed. The developed relations were found to predict the SCFs accurately.

 


Keywords


Stress concentration factor, Expansion process, Semi-empirical formulations, Tube expansion

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References


Chitwood GB, Eisinger NC, Puckett BC (2005), Corrosion resistant and long-term reliability of super-austenitic alloy 27-7MO for use as expandable tube. SPE95094. SPE International Symposium on Oilfield Corrosion, Aberdeen, United Kingdom.

Dennis ST, Palazotto AN (1990), Static response of a cylindrical composite panel with cutouts using a geometrically nonlinear theory. Journal of American Institute of Aeronautics and Astronautics 28(6):1082-1088.

Pilkey WD (1997), Peterson's stress concentration factors. 2nd Edition, Wiley Interscience, john Wiley and Sons, ISBN: 978-0-471-53849-3.

Steele CR, Steele ML, Khathlan A (1986), An efficient computational approach for a large opening in a cylindrical vessel. ASME Journal of Pressure Vessels Technology 108(4):436-443.

Tan SC (1994), Stress concentrations in laminated composites. CRC Press, Taylor and Francis Group, USA.

Toubal L, Karama M, Lorrain B (2004), Stress concentrations

in a circular hole in composite plate. Composite Structure 68:31-36.

Van DP (1965), Stress about a circular hole in a cylindrical shell. Journal of American Institute of Aeronautics and Astronautics 3:1733-1742.

Xue MD, Deng Y, Hwang KC (1991), Some results on the analytical solution of cylindrical shells with large openings. ASME Journal of Pressure Vessels Technology 113(2):291-308.




DOI: http://dx.doi.org/10.24200/tjer.vol10iss1pp88-96

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Copyright (c) 2017 L Mhamdi, AC Seibi, A Karrech, S El-Borgi, I Barsoum

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